warn "gosu/preview.rb has been removed in Gosu 0.9.0, and Gosu itself \n" +
       "provides a similar interface to what preview.rb used to offer.\n" +
       "Notable differences:\n" +
       "• no global $window variable\n" +
       "• no global Gosu.mouse_x and Gosu.mouse_y functions\n" +
       "• Image#initialize et.al. use an options hash now"

require "gosu"
